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Inventories (Tables)
12 Months Ended
Sep. 30, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories at September 30 consist of:
 
2018
 
2017
Raw materials and supplies
$
6,202

 
$
6,108

Work-in-process
6,626

 
7,650

Finished goods
5,441

 
6,623

Total inventories
$
18,269

 
$
20,381